研究了热镀锌层柠檬酸改进型稀土铈盐转化膜工艺,探讨了工艺条件对转化膜耐蚀性的影响.通过正交试验和单因素试验得到柠檬酸改进型稀土铈盐转化膜的最佳工艺为:Ce(NO3)3·6H2O 25～30 g/L,H2O24～6mL/L,柠檬酸20 g/L,处理温度70℃,处理时间10 min.经柠檬酸改进后的铈盐转化膜耐蚀性能明显优于常规铈盐转化膜.
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